National Science Foundation
Applied Science and Research Applications Directorate
Sludge Management - An Integrated Approach
AVA08336VNB1 - 1994
Details research into new methods of managing sludge, the pollutants removed from wastewater, in an ecologically sound way. Since sludge is produced at the rate of thirty-five billion gallons a year at sewage treatment plants in the US, there is a lot of sludge.
Produced for the government by Media Four Productions.
March 28, 2010 Subject:
The Joy Of Sludge
If you're making a home movie about chemistry, or just sludge, and you need PD stock footage, you've hit the jackpot: Scientists process dark-colored liquid sludge in pipes, tanks, test tubes, beakers, etc. etc.